2016
DOI: 10.1016/j.bcmd.2015.10.005
|View full text |Cite
|
Sign up to set email alerts
|

Which side of the balance determines the frequency of vaso-occlusive crises in children with sickle cell anemia: Blood viscosity or microvascular dysfunction?

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
4
1

Citation Types

0
25
2
2

Year Published

2017
2017
2021
2021

Publication Types

Select...
4
3

Relationship

2
5

Authors

Journals

citations
Cited by 30 publications
(29 citation statements)
references
References 36 publications
0
25
2
2
Order By: Relevance
“…Moreover, elevated blood viscosity is supposed to increase the vaso‐occlusive risk but no difference was observed between the patients with Ben/Ben combination and the other groups regarding VOC and ACS rates. Interestingly, a recent study conducted in children with SCA demonstrated that not only increased blood viscosity but also reduced microvascular oxygenation is needed to promote frequent VOC. Further studies on larger cohorts are needed to confirm our results.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…Moreover, elevated blood viscosity is supposed to increase the vaso‐occlusive risk but no difference was observed between the patients with Ben/Ben combination and the other groups regarding VOC and ACS rates. Interestingly, a recent study conducted in children with SCA demonstrated that not only increased blood viscosity but also reduced microvascular oxygenation is needed to promote frequent VOC. Further studies on larger cohorts are needed to confirm our results.…”
Section: Discussionmentioning
confidence: 99%
“…In conclusion, our study demonstrated that patients with homozygous alpha‐thalassaemia have more frequent VOC, which may be due in part to its effects on both RBC deformability and aggregation. It seems that two different subgroups of patients with SCA may be at higher risk for frequent VOC: (i) those with high blood viscosity, independently of the β S ‐haplotypes or alpha‐thalassaemia status and (ii) those with homozygous alpha‐thalassaemia who exhibit higher RBC deformability and aggregation.…”
Section: Discussionmentioning
confidence: 99%
“…Previous in vivo investigations of blood flow in relation to hydroxycarbamide therapy in SCD have involved assessment of transcranial flow (Zimmerman et al, 2007;Helton et al, 2014) or forearm blood flow (Gladwin et al, 2003). Assessment of microvascular flow in SCD has only been possible in the skin (Charlot et al, 2016) and the retina (Minvielle et al, 2016) to a limited degree. To our knowledge, this is the first study to directly evaluate differences in muscle and myocardial perfusion at the microvascular level associated with HC treatment in SCD patients.…”
Section: Discussionmentioning
confidence: 99%
“…Esta relação foi significativamente menor nos indivíduos com anemia falciforme e, tanto uma maior atividade do parassimpático (aumento do HF) quanto uma menor atividade do simpático (menor LF) podem ter contribuído para a maior expressão deste desequilíbrio. A cautela em avaliar a atividade do SNA levando-se em consideração as situações de agravamento da doença, especialmente as crises vaso-oclusivas, respalda-se em estudos recentes que demonstraram que a atividade do SNA pode estar prejudicada durante as crises (HEDREVILLE, 2014;CHARLOT, 2015CHARLOT, , 2016, com possível relação entre as alterações do SNA e a fisiopatologia da AF (CONNES e COATES, 2013 Reconhecemos que desvendar aspectos fisiopatológicos da modulação autonômica da frequência cardíaca na anemia falciforme por si só não trará implicações práticas no manejo clínico desta prevalente doença hereditária. Entretanto, mais longe estaremos do controle das morbidades e da mortalidade desconhecendo os complexos e diversos mecanismos fisiopatológicos envolvidos.…”
Section: Discussionunclassified
“…Descrição das variáveis físicas e de exames do grupo de crianças e adolescentes com anemia falciforme (n=45), Rio Branco, Acre, 2015-2016 …”
Section: Lista De Tabelasunclassified